Ankle element



FIG. 1 is a right and rear side elevational view of an ankle element showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a rear view thereof; and,

FIG. 6 is a bottom view thereof.

The broken line showing of a shoe upper and sole in the figures is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for an ankle element, as shown and described. 